52 



,?t^V" , ^'--ime of Species, 



which found. ' 



Y Solon soi'cUdus, T((te 



O Soleciirtus Dennanti, Tate 



Y Barnea tiara, Tate 



O Teredo Heaphyi, Zittel 

 O Humphreyia lirata, Tate 

 O Saxica^'a arctica, Linn. 



A few fossils, abundant in the lower zone, but only known in; 

 the upper by an occasional rolled and worn examj)le, are, I think, 

 derived forms, and they have not therefore been noted in the- 

 above list as belonging to l^oth beds, At the actuf^l junction of 

 the beds, owing j^robably to a partial reconstruction of the strata, 

 there is for a small space, both above and below the nodule band,, 

 a slight intermingling of the characteristic species of the tw^o 

 zones. This is not noticeable with the larger shells, but was ob- 

 served to be the case for the smaller forms by Professor Tate,, 

 when examining some parcels of fossiliferous earth, which I for- 

 warded to him a few months ago. Professor Tate gives the fol- 

 lowing as the result of his sif tings of the earth sent : — 



" Working at the gatherings from the two beds I have so far 

 found the following species in common : — 



I. C liar act eristic fossils of the upper heel passing down into tlie top^ 

 of the loiver series. 

 Chione subroborata, small and rare. 



propinqua, small and rare. 

 Pectunculus convexus, small and very rare. 

 Placunanomia lone, small and very rare. 

 Marginella muscaroides, rare. 

 Leiopyrga cingulata, common but small. 

 Montacuta sericea, one perfect valve. 

 Rissoa, sp. 



The following are doubtful constituents of the fauna :— 

 Ancillaria papillata, one rolled fragment. 

 Terebra geniculata, two rolled examples. 

 Phasianella, both species, rolled one of each. 

 Columbella tridens, one rolled. 

 Rissoina sp., one rolled. 

 Tellina requilatera, one fragment. 

 Psammobia Hamiltonensis, one fragment. 

 Barnea tiara, one fragment. 



II. Fossils of the Joicer series passing to the apper series.- 

 Sacchia suborbicularis, one example, small. 

 Lucina despectans, one example, small. 

 Erato minor, several examples, worn. 



